Dorman M39543 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Taurus and Mercury Sable

The Dorman M39543 brake master cylinder is engineered to restore proper brake hydraulics in select Ford and Mercury vehicles. Designed specifically for the Ford Taurus and Mercury Sable, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

• Dual bore diameters: 0.875 inch and 1.25 inch for precise hydraulic control
• Durable cast iron construction for long-lasting performance
• Includes reservoir and sensor for complete brake system integration
• Four outlets with M10 x 1.0 thread size for secure brake line connections
• Compatible with Ford Taurus and Mercury Sable models requiring part number M39543

Product Details and Specifications

The Dorman M39543 brake master cylinder features a cast iron body designed to withstand the rigors of brake system pressure and heat. It includes a reservoir and sensor, allowing for seamless integration with the vehicle’s brake fluid monitoring system. The master cylinder has two bore diameters, 0.875 inch and 1.25 inch, which help regulate brake fluid flow to the front and rear brakes. With four outlets threaded M10 x 1.0, it provides secure connections to the brake lines, ensuring reliable hydraulic performance. This part is specifically engineered for use in Ford Taurus and Mercury Sable models, making it a precise replacement for the original equipment.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing soft or spongy brake pedal feel
• Replaces master cylinders with leaking reservoirs or faulty sensors
• Addresses brake system failures caused by internal cylinder wear or corrosion
• Improves brake responsiveness in Ford Taurus and Mercury Sable models
• Eliminates brake warning light issues related to sensor malfunction

Installation Notes and Tips

Installation of the Dorman M39543 brake master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Since mounting hardware is not included, retain original mounting bolts or source compatible hardware. Ensure all brake line fittings are tightened to manufacturer specifications to prevent leaks. It is recommended to inspect brake lines and related components during installation for overall system integrity.

Quality Assurance and Warranty

Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. The M39543 part undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to Dorman’s official warranty policy for complete information.